Telephony redirection settings — Emergency call forwarding

Emergency call redirection activates when all SIP accounts are offline.

1. Add the required number of phone numbers or SIP URIs.
2. Specify a time interval (in seconds) after which the call will be redirected to the next number if the previous one does not answer after the specified time interval.
3. Enable the "Show redirected caller’s phone number" option, if it's necessary for the caller's number to be displayed to the called subscriber during redirection.

Also see:

Call handling in Telephony

Call handling management

Automatic Caller ID change

Telephony redirection settings — Redirect by schedule

Telephony redirection settings — Unconditional redirect

Telephony redirection settings — "Redirect if Busy" and/or "Redirect if no Answer"